The machine offers two espresso sizes: short (1.4 fl.oz.) or lungo (2.8 fl.oz.). It has three frothing modes, allowing preparation of cappuccino or latte as well as cold frothing.

The new Keurig Rivo will be sold exclusively at select Bloomingdales stores for $229.99 beginning in mid-November, and is expected to become more widely available by spring.

The Rivo debut follows Green Mountain's launch of the single-cup Keurig Vue earlier this year. The V1200 Vue commercial model, which began shipping this fall, allows users to customize the strength, size and temperature of their beverages, It is said to be the first brewer in the industry to incorporate RFID technology in its portion packs to control brew settings.

Both the Rivo and the Vue are designed to accept their own proprietary coffee pods rather than Keurig's well-known K-cups. The Rivo brewer goes head to head with Starbucks Corp.'s single-cup Verismo espresso machine launched in September. The major difference is that Rivo uses fresh milk, while Verismo uses powdered milk in pods.

Green Mountain has been facing increased competition since certain patents relating to the design of its K-Cups expired this fall, leading rival coffee roasters and private-label brands -- including Kraft's Maxwell House and the Safeway and Kroger's supermarket chains -- to produce Keurig-compatible portion packs.